A Cardiac Event recorder is a two lead, single channel hook up.
It is normally worn for two weeks but a month or two is not uncommon.
Patients remove electrodes, and replace after bathing.
While it has a threshold based, auto recording feature, normally it does not record anything, except patient documented episodes. Once a patient pushes the record button, it stores 30 seconds before and 30 seconds after for a single one minute “event”.
When the recorder is full of its six events, its contents are transmitted over regular telephone lines for interpretation here in Kingston.